Wave damping characteristics of vertically stratified porous structures under oblique wave action

Sheng Wen Twu, Cheng Chi Liu, Chang Wei Twu

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

The characteristics of wave damping for the vertically stratified porous breakwaters are investigated under oblique wave action. It is found that for common angles of incidence, the wave damping efficiency of a vertically stratified porous structure behaves very similar to a simple structure. The reflection coefficient decreases with increasing angle of incidence while the transmission coefficient only slightly increases as the angle of incidence increases. It is shown that the wave energy loss is in direct proportional to the structure thickness and its porosity regardless of the angle of incidence. Considering small transmission coefficient as a basic requirement and if a moderate reflection coefficient is accepted, a structure thickness of b/h = 1 is proposed. In this situation, since the structure does not have a very large thickness, adopting a vertically stratified structure is not an effective way to improve its wave damping efficiency.

Original languageEnglish
Pages (from-to)1295-1311
Number of pages17
JournalOcean Engineering
Volume29
Issue number11
DOIs
Publication statusPublished - 2002 May 6

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Ocean Engineering

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